Portable fluorescent lantern



FIG. 1 is a front view of the portable fluorescent lantern showing my new design;

FIG. 2 is a side view of the lantern, the opposite side view being similar;

FIG. 3 is a rear view of the lantern;

FIG. 4 is a top plan view of the lantern and

FIG. 5 is an underneath plan view of the lantern. 

The ornamental design for a portable fluorescent lantern, as shown and described. 